How to protect nerve cells in a stroke

Many neurons can survive a stroke, but for this you need to prevent them from losing too much potassium. A circulatory disturbance in the brain threatens with a stroke: a little blood comes to neurons, they lack oxygen and nutrients, and as a result, nerve cells die in large numbers. But among them there are […]

Why does the new coronavirus cause severe inflammation?

The SARS-CoV-2 virus raises the level of the hormone, which triggers self-reinforcing inflammation. The new SARS-CoV-2 coronavirus is notorious for causing severe inflammation, which is very harmful to healthy tissues. In connection with coronavirus inflammation, one can often hear the term “cytokine storm” – because during the disease, the level of inflammatory signaling cytokine signal […]

Immunity learns to fight the new coronavirus on old coronaviruses

In the blood of people who have never had COVID-19, there are immune cells that can recognize the new coronavirus. When an infection enters the body, the cells and molecules related to innate immunity are the first to respond to it. They respond to nonspecific signs of bacteria and viruses, for example, fragments of the […]

One in a million: find a strange super-earth towards the center of our galaxy

Illustration of the inferred size of another super-earth (center) compared to the land and Neptune. Astronomers at the University of Canterbury found an incredibly rare new super-earth toward the center of our galaxy. This would be one of the few that has been discovered with a size and orbit similar to Earth. The details were […]

New coronavirus infects intestinal cells

Coronavirus SARS-CoV-2 was seen in the cells of the human “micro intestine”. Generally speaking, specialists have guessed for a long time that the new SARS-CoV-2 coronavirus affects not only the respiratory system, but also the intestines. Firstly, in patients with coronavirus infection COVID-19, in addition to respiratory symptoms (cough, suffocation, etc.), there are often “intestinal” […]

Does smoking increase the risk of COVID-19?

In smokers and in patients with chronic obstructive pulmonary disease, a lot of protein appears in the lung cells to contribute to coronavirus infection. As everyone already knows, COVID-19, a disease caused by the new SARS-CoV-2 coronavirus, occurs in different people with different severities: some have almost no symptoms, and some die. Obviously, there are […]

Influenza molecule prevents coronaviruses from multiplying

An analogue of the genetic letter, which causes many mutations in influenza viruses, can be effective against the new coronavirus. Particles of coronavirus emerging from the cell. (Photo: NIAID-RML / Wikipedia) ‹ › Once in the cell, any virus begins to synthesize its proteins and copy its nucleic acid. Then new copies of the viral […]

Vitamin B12 Helps Cancer Cells Die

Vitamin B12, together with an antitumor substance, launches a special program of cell death in cancer cells, which the cells cannot resist. One of the ways to fight tumor cells is to provoke oxidative stress in them: aggressive oxidizing molecules will actively spoil the proteins, lipids and DNA of the cells, so that, despite their […]